PROJECT ARCHIVE
Source: supplied project archive. The intervention and outcomes below are reported for this project. Supporting records can be discussed with Euras.
The challenge
Water Ingress in Cooling Galleries
Kraftwerk Hamm-Uentrop is a major thermal power generation site in Germany with critical cooling water galleries housing large pipe penetrations and service tunnels. Over time, active leaks developed around construction joints and old sealing rings, causing:
- Persistent standing water in inspection tunnels,
- Risk of corrosion of embedded pipes and fittings,
- Potential impact on operational safety and regulatory compliance,
- Inaccessibility for conventional sealing methods without partial shutdown.
Given the plant’s importance and environmental obligations, a fast and lasting repair was essential.
The solution
EURAS® Gel Type B – Non-Invasive Sealing Under Operating Conditions
Following an engineering assessment, EURAS® Gel Type B was chosen for its:
- Hydroscopic swelling behavior that displaces active water,
- Penetration into fine cracks and voids behind linings,
- Elasticity maintaining a seal under thermal cycling and vibration,
- Compatibility with wet concrete and corroded surfaces,
Execution methodology
The intervention was planned for minimal operational disruption, including:
- Precise mapping and marking of infiltration zones around pipe penetrations and gallery joints.
- Drilling injection ports and installing special packers along the affected areas.
- High-pressure injection of EURAS Gel Type B at up to 140 bar to ensure deep distribution into micro-cracks and cavities.
- Monitoring flow reduction and gel return to verify complete fill.
- Final performance verification with leak tests and visual inspections.
The project was completed without the need to shut down critical cooling systems.